GODT-1244: Refactor switching stable-early and factory reset

internal/versioner/remove.go

@@ -0,0 +1,75 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+//go:build !darwin
+// +build !darwin
+
+package versioner
+
+import (
+	"os"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/internal/constants"
+	"github.com/sirupsen/logrus"
+)
+
+// RemoveOldVersions removes all but the latest app version.
+func (v *Versioner) RemoveOldVersions() error {
+	versions, err := v.ListVersions()
+	if err != nil {
+		return err
+	}
+
+	// darwin does not currently use the versioner.
+	if len(versions) == 0 {
+		return nil
+	}
+
+	for _, version := range versions[1:] {
+		if err := os.RemoveAll(version.path); err != nil {
+			logrus.WithError(err).Error("Failed to remove old app version")
+		}
+	}
+
+	return nil
+}
+
+// RemoveOtherVersions removes all but the specific provided app version.
+func (v *Versioner) RemoveOtherVersions(versionToKeep *semver.Version) error {
+	versions, err := v.ListVersions()
+	if err != nil {
+		return err
+	}
+
+	for _, version := range versions {
+		if version.Equal(versionToKeep) {
+			continue
+		}
+		if version.Equal(semver.MustParse(constants.Version)) {
+			if err := v.RemoveCurrentVersion(); err != nil {
+				logrus.WithError(err).Error("Failed to remove current app version")
+			}
+			continue
+		}
+		if err := os.RemoveAll(version.path); err != nil {
+			logrus.WithError(err).Error("Failed to remove old app version")
+		}
+	}
+
+	return nil
+}